
/**
 * Copyright 2009 cestum.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package org.waveprotocol.wave.model.document.operation.impl.impl {
import org.waveprotocol.wave.model.document.operation.AnnotationBoundaryMap;
import org.waveprotocol.wave.model.document.operation.Attributes;
import org.waveprotocol.wave.model.document.operation.AttributesUpdate;
import org.waveprotocol.wave.model.document.operation.DocumentOperationCursor;
import org.waveprotocol.wave.model.document.operation.impl.DocumentOperationUtil;
import org.waveprotocol.wave.model.util.StringBuilder;

public final class ConciseDocOpCursor implements DocumentOperationCursor {

    var b:StringBuilder;
    public function ConciseDocOpCursor(b:StringBuilder) {
    	this.b =b;
}


	public function deleteCharacters(chars:String):void {
      b.append("--" + DocumentOperationUtil.literalString(chars) + "; ");
    }

    
    public function deleteElementEnd():void {
      b.append("x>; ");
    }

    
    public function deleteElementStart(type:String, attrs:Attributes):void {
      b.append("x< " + type + " " + DocumentOperationUtil.toConciseString(attrs) + "; ");
    }

    
    public function replaceAttributes(oldAttrs:Attributes, newAttrs:Attributes):void {
      b.append("r@ " + DocumentOperationUtil.toConciseString(oldAttrs) + " " + DocumentOperationUtil.toConciseString(newAttrs) + "; ");
    }

    
    public function retain(distance:int):void {
      b.append("__" + distance + "; ");
    }

    
    public function updateAttributes(attrUpdate:AttributesUpdate):void {
      b.append("u@ " + DocumentOperationUtil.toConciseString(attrUpdate) + "; ");
    }

    
    public function annotationBoundary(map:AnnotationBoundaryMap):void {
      b.append("|| " + DocumentOperationUtil.toConciseString(map) + "; ");
    }

    
    public function characters(chars:String):void {
      b.append("++" + DocumentOperationUtil.literalString(chars) + "; ");
    }

    
    public function elementEnd():void {
      b.append(">>; ");
    }

    
    public function elementStart(type:String, attrs:Attributes):void {
      b.append("<< " + type + " " + DocumentOperationUtil.toConciseString(attrs) + "; ");
    }
  

}
}